Answers:
Lavasoft Ad-Aware is a fitting program to use.
http://www.lavasoft.com/
Yeah if you're runnin' a Windows system achieve AVG from grisoft, and Spybot Search & Destroy free past its sell-by date the lattice! The best spyware, anti-malware is to use Ubuntu 7.04, beside Beryl!
Spyware Doctor is a accurate choice
Free antispyware products comparison table can be found on:
http://www.2-spyware.com/compare2.php...
Paid products comparison is on:
http://www.2-spyware.com/compare.php...
Hope this help!